US5147968A
Expired / Lapsed
US
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Electromagnetic radiation absorbers and modulators comprising polyaniline
Assignee: Ohio State University Research Foundation
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Filing: 1991-09-23
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Granted: 1992-09-15
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Expires: 2011-09-23
Abstract
Abstract A composition for absorbing electromagnetic radiation (such as microwave, infrared, visible light radiation ultraviolet radiation), wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR1## where y can be equal to or greater than zero and R' and R 2 are independently selected from the group consisting of --H, --OCH 3 , --CH 3 , --F, --Cl, --Br, --I, --NR 3 2 , --NHCOR 3 , --OH, --O, --SR 3 , --OR 3 , --OCOR 3 , --NO 2 , --COOH, --COOR 3 , --COR 3 , --CHO, and --CN, where R 3 is a C 1 to C a alkyl, aryl or aralkyl group.
Inventors
- 👤 Arthur J. Epstein
- 👤 John M. Ginder
- 👤 Mitchell G. Roe
- 👤 Hamid Hajiseyedjavadi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:18
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128; C; C08; C08G; C08G73/00; C08G73/02; C08G73/026; C08G73/0266; D; D01; D01F; D01F6/00; D01F6/58; D01F6/76; D06; D06M; D06M10/00; D06M10/04; D06M10/08; D06M10/10; D06M15/00; D06M15/19; D06M15/37; D06M15/61; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3611
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A composition for absorbing electromagnetic radiation, wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR8## where y can be equal to or greater than zero, and R 1 and R 2 are independently selected from the group consisting of H, --OCH 3 , --CH 3 , --F, --Cl, --Br, --I, --NR 3 2 , --NHCOR 3 , --OH, --O - , --SR 3 , --OR 3 , --OCOR 3 , --NO 2 , --COOH, --COOR 3 , --COR 3 , --CHO, and --CN, where R 3 is a C 1 to C 8 alkyl, aryl or aralkyl group.
Claim 2
Dependent Claim
120 words
A composition for absorbing electromagnetic radiation, wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR8## where y can be equal to or greater than zero, and R 1 and R 2 are independently selected from the group consisting of H, --OCH 3 , --CH 3 , --F, --Cl, --Br, --I, --NR 3 2 , --NHCOR 3 , --OH, --O - , --SR 3 , --OR 3 , --OCOR 3 , --NO 2 , --COOH, --COOR 3 , --COR 3 , --CHO, and --CN, where R 3 is a C 1 to C 8 alkyl, aryl or aralkyl group.
Claim 3
Dependent Claim
31 words
A composition as claimed in claim 1 wherein the electromagnetic radiation is microwave radiation which possesses a wavelength generally in the range of from about 0.04 cm to about 25 cm.
Claim 4
Dependent Claim
31 words
A composition as claimed in claim 1 wherein the electromagnetic radiation is infrared radiation which possesses a wavelength generally in the range of from about 8,000 Angstroms to about 0.04 cm.
Claim 5
Dependent Claim
32 words
A composition as claimed in claim 1 wherein the electromagnetic radiation is visible light radiation which possesses a wavelength generally in the range of from about 4,000 Angstroms to about 8,000 Angstroms.
Claim 6
Dependent Claim
31 words
A composition as claimed in claim 1 wherein the electromagnetic radiation is ultraviolet radiation which possesses a wavelength generally in the range of from about 100 Angstroms to about 4,000 Angstroms.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-15 | 1996-03-16 | 1996-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-15 | 2000-03-16 | 2000-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-15 | 2004-03-16 | 2004-09-15 | $7700.00 | Window Closed / Lapsed |